Power-transmitting mechanism.



W. GRUNOW, JR.

POWER TRANSMITTING MECHANISM.

APPLICATION. EILED MAR. 2. 1915.

1,165.,09 1 111911-61 Dec. 21, 1915.

12 all? 26 JQJ 5] I139 25 L 1 T 27 2 5 @I1/6 10 5 7 g 56 cilwomal o'o wi lmeoom WILLIAM GRUN OW, JR., OFNEW YORK, N. Y.

POWER-TRANSMITTING MECHANISM.

Specification of Letters Patent.

Patented Dec. 21, 1915.

Application filed March 2, 1915. Serial No. 11,516.

To all whom it may concern:

Be it known that 1, WILLIAM GRUNow, Jr., a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Power- Transmitting Mechanism, of which the following is a description, reference being had to the accompanying drawing, and to the figures of reference marked thereon.

. The invention relates to new and useful improvements in power transmitting mechanisms, and more particularly to a power transmitting mechanism wherein a single element or member is actuated from two separate or independent sources of power.

An object of the invention is to provide a mechanism through which power is transmitted from two independent sources to a common element, which mechanism is so constructed that said element may be moved in one direction from one source of power, and in the other direction from the other source of power, and whereby when both sources of power operate simultaneously, the movements imparted by said sources of power are neutralized so no movement occurs in said element.

In the drawings, Figure 1 is a front elevation showing more or less diagrammatically one embodiment of the invention; Fig. 2 is a view partly in section and partly in end elevation of the actuating mechanism at the left in Fig. 1; Fig. 3 is a similar view of the mechanism at the right in Fig. 1; Fig. 1 is a detail showing a modified form of operative element and the means for directly actuating the same.

In carrying out my invention, I have provided an element which is capable of being moved in opposite directions, and this element may be utilized for transmitting power to various devices. Said element is moved in one direction by a train of mechanism leading to a source of power, and is operated in the other direction by a train of mechanism leading to an independent source of power. These trains of mechanism have common elements and are so constructed thatwhen both sources of power are active at the same time, the movements imparted to the element are neutralized so said element is moved in either direction.

Referring more in detail to the drawings, in Fig. 1 the element to be moved is indicated at 1. This element is shown in the form of a bar purely for the purpose of illustration. Said bar 1 has an upwardly projecting lug 2 formed with spaced ears 3 and 4. Directly above the bar is a shaft 5 mounted in suitable bearings 6 and 7, so said shaft may rotate and move endwise. This shaft is provided with a flange or disk 8, extending between the ears 3 and 4E of the projecting lug on the bar 1.- As above noted, this bar 1 is mounted to slide endwise in suitable bearings, (not shown). When the shaftmoves to the left, as viewed in Fig. 1, the bar will be moved'to the left, and when said shaft is moved to the right, then the bar will be moved to the right. The shaft 5. at the left extends through a ratchet hub 9. Said shaft 5 is provided with a groove 10, which receives a spline 11, so theshaft is free to slide endwise in this hub 9, but rotates with said ratchet hub. The bearing 6 is mounted on a suitable frame 12. Reciprocating on the frame 12 is a slide 13. This slide 13 is one source of power for operating the bar 1. Said slide may be operated in any suitable way.

Mounted on the slide 13 is a post 14. The ratchet hub 9 is provided with a series of spaced ratchet teeth 15.- The post-1 1 carries a downwardly projecting arm 16, and also a pivoted pawl 17. The pawl 17 is normally pressed toward the ratchet wheel by a spring 18, shown in dotted lines in Fig. 2. The pawl 17 is'adapted to cooperate with the ratchet teeth 15 on the ratchet hub 9. When the slide 13 moves upward from the position shown in F ig. 2, the arm 16 will be withdrawn from the path of movement of the teeth 15 on the ratchet hub 9, and the pawl 17 will rotate said ratchet hub. There is a slight clearance between the pawl 17- and the tooth with which it cooperates when the slide 13 is in its lower position, so that the arm 16 moves out of the path of travel of the tooth ,15 before the pawl 17 engages the. ratchet wheel to turn the same.

On the downward movement of the slide 13 the arm 16 again moves into the path of travel of the teeth 15, and prevents the ratchet hub from turning in a counter-clockwise direction as viewed in Fig. '2. A. pawl 19 mounted on the bearing films a project ing end adapted to engage in rear of the teeth to prevent retrograde or clockwise movement of the ratchet hub 9. The end of this pawl is tapered so it freely rides over the teeth and snaps in behind the same for holding the ratchet hub as stated.

In order to prevent overthrow of the ratchet hub when the same is actuated by the pawl 17, I have provided a pawl 20, pivoted at 21 to the bracket forming the hearing 6. This pawl 21 has an arm 22 adapted to be moved into the path of movement of the teeth 15, and to be withdrawn from the path of movement of the teeth 15, through the operation of the pawl 17 on said pawl 20. Said pawl 20 has a second arm 23 projecting from the other side of its fulcrum. The pawl 17 has a cam shoulder 24.

When the slide 13 is in its lower position, the lower end of the pawl 17 engages the arm 22 of the pawl 20 and forces the same downward a sufficient distance so that the end of the pawl clears the teeth 15. This position of the pawl 20 is such that when the slide 13 moves upward, said pawl will be held out of the path of the teeth 15 until the pawl 17 engages the ratchet hub and turns the same a suflicient distance'so that the pawl 22 will strike on the outer face of the tooth. This permits the pawl22 to pass the tooth, after which the cam shoulder 24- engages the arm 23 of the pawl 20 and moves it into the path of the next tooth 15, and thus limits the movement of the ratchet hub, so 1 as to prevent overthrow. In other words, the movement of the ratchet hub will depend upon the upward throw of the pawl 17.

' From the above description, it will be apparent that I have provided means which positively holds the ratchet hub from movement while the slide 13 is idle. consists of the arm 16 and the pawl 19, held pressed againstthe ratchet hub by the spring 25.; I have also provided means for turning the ratchet hub, which is the pawl 17, and the slide 13 withdraws the arm 16, so as to permit the hub to be turned. Then again I have provided means for preventing the overthrow of the ratchet hub, which is the pawl 20, and this pawl 20 is controlled by the pawl 17 carried by the slide 13. At the other end of the shaft 13 there is a thread 26, which is engaged by a ratchet nut 27. This ratchet nut is mounted to turn freely in the bracket forming the bearing 7, but is held from endwise movement in said bracket. The ratchet nut is operated by aslide 28, which is the second source of power for operating the shaft 5. This slide may be recip- This means I rocated in any suitable way. Mounted on the slide 28 is a post 29 which carries a pawl 30. The pawl 30 is pivoted to the post, and a spring 31 normally presses the pawl into engagement with a ratchet nut. Said ratchet nut is formed with teeth 32. An arm 33 carried by the post 29 is adapted to engage in front of the teeth 32 when the slide is in its lower position. A pawl 34 mounted on the bracket carrying the bearings 17, and spring pressed against the ratchet wheel by a spring 35, prevents the rotation of the ratchet nut in a clockwise direction as viewed in Fig. 3. A pawl 36 pivoted to the bracket carrying the bearing 7, operates to prevent overthrow of the ratchet nut. This.

pawl mechanism for the ratchet nut is exactly similar in construction and method-of operationto that for the ratchet hub, and further description thereof is not thought necessary.

The operation of my device is as follows: Let us suppose first that the source of power actuating the slide 13 is operative, while the source of power actuating the slide 28 is idle. The movement of the slide 13 will rotate the shaft 5 in a counter-clockwisedirection, as

viewed from the left hand end of the shaft,

and inasmuch as the ratchet nut 27 is held from rotation through the actionof the arm 33, said shaft 5 will be turned to move out of the nut or move to the left as viewed in Fig.

1. This endwise movement of the shaft 5 imparts an endwise movement to'the bar 1 to the left as viewed in this figure. Let us suppose again that the power actuating the slide 28 is active while the power operating the'slide 13 is idle. This will cause a rotation of the ratchet nut 27 in a clockwise direction as viewed from the right hand end of the shaft 5, and inasmuch as the shaft is held from turning through the locking of the ratchet hub, said nut will cause the shaft tomove in an endwise direction to the right as'viewed in Fig.1, which in turn will move the bar 1 to the right. Let us suppose again that both the actuating powers are active, that is, both the slides 13 and 28 are moved upward simultaneously. This upward movement of the slide 13 will rotate the shaft so as to tend to turn the same out of the ratchet nut 27 and move the shaft to the left, but during this unthreading movement of the shaft, the ratchet nut is also turned by the slide 28, which would tend to thread the nut on to the shaft ormove the shaft to the right, and, therefore, the shaft will turn, the nut will turn and there will be no endwise movement of the shaft. In other words, the movement from the source of power through the slide 13 and the movement from the source of power through the slide 28 neutralize each other, so there is no endwise movement imparted tothe bar.

carried thereby for actuating said ratchet nut by said actuating pawl during its worknut, an arm carried by the reciprocating ing stroke. 10 member for holding the ratchet nut from In testimony. whereof, I afliX my signamovement when the same is idle, a pawl for ture, in the presence of two. witnesses.

preventing overthrow of said ratchet nut, WILLIAM GRUNOVV, JR. said pawl being held out of engagement Witnesses: with the ratchet nut by said actuating pawl R. WV. LIOKLEY, and moved into engagement with the ratchet W. H. MoGRATrr, J r.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

